ruby-mode.el: fix argument indent

* misc/ruby-mode.el (ruby-block-end-re, ruby-delimiter)
  (ruby-mode-syntax-table, ruby-parse-partial, ruby-beginning-of-indent):
  merge from Emacs.
* misc/ruby-mode.el (ruby-calculate-indent): fix indentation of
  argument lines in parentheses.  [Bug #5140]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38150 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/misc/test_ruby_mode.rb

@@ -165,5 +165,17 @@ class TestRubyMode
       |  end
       |')
     end
+
+    def test_spread_arguments
+      assert_indent('
+      |foo(1,
+      |    2,
+      |    3)
+      |', '
+      |foo(1,
+      | 2,
+      |  3)
+      |')
+    end
   end
 end if TestRubyMode::EMACS